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greenchild623

need help with system: -14=-2=y-7x 2x=10y +4 PLEASE HELP!!!!

  • 2 years ago
  • 2 years ago

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  1. eashmore
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    What do you need to do with the system?

    • 2 years ago
  2. greenchild623
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    solve for x and y

    • 2 years ago
  3. eashmore
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    Is the system\[\begin{matrix}-14 - 2 = y-7x \\ 2x = 10y + 4\end{matrix}\]

    • 2 years ago
  4. eashmore
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    Do you have to use any particular method?

    • 2 years ago
  5. greenchild623
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    sorry.... it is: -14=-20y-7x 10y +4 = 2x

    • 2 years ago
  6. greenchild623
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    solve by elimination....

    • 2 years ago
  7. greenchild623
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    (sigh...)

    • 2 years ago
  8. eashmore
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    Weird. I replied to this but my answer isn't showing up. Let me re-type it real fast.

    • 2 years ago
  9. greenchild623
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    'k

    • 2 years ago
  10. eashmore
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    First, we need to solve the first equation for x. We get\[x = -(20/7)y + 2\] Then we substitute this expression into the second equation. This yields \[10y - 2(-(20/7)y + 2) = -4\]Solve this for y and plug the value of y back into our expression for x. Let me know what you get.

    • 2 years ago
  11. greenchild623
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    x=34 y=?

    • 2 years ago
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